Brush.



H. NELsoN BRUSH.

APPLICATION FILED NOV. 5, 1906.

' Patented Aug.3o,191o.

F7 m m m f Hen? HENRY NELSON, OF CLEVELAND, OHIO.-

BRUSH.

Specification of Letters Patent. Patented 'Aug 30, 1910.

Application led November 5, 1906. Serial' No. 342,079.

1b all whom 'it may concern.'

Be it known that I, HENRY NELSON, a subject of the King of Denmark, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Brushes, of which the following is a specification, referj ence being had to the accompanying drawings, forming a part thereof.

My invention relates to improvements in brushes, and is herein shown and described as embodied in a sectional rotary brush especially adapted for the purpose of cleaning scale or rust from castings.

The object of my invention has been to produce a brush wherein the sections are readily renewable, yet are firmly secured against displacement, while maint-aining the cost of manufacture of such renewable sections at a minimum.

Further features and advantages will be gathered upon considering the specification and drawings hereto annexed.

It has been found that the sectionalbrushes hitherto constructed for the use of removing scale are subjected to such Wear throughout the permanent portions thereof, as to render them liable, when run at high speed, to the accidental displacement of the sections, with the possibility of injuring the user and damaging the machinery. Moreover, in this type of apparatus it has been found that the brush-sections ordinarily constructed of crimped wire, are very dithcult to secure in place through the natural spring of the wire and the tension under which the sections must be placed. Accordingly, recourse is had in these prior structures to such means as relatively long telescoping hub-members which are drawn togetherV by means of co-acting threaded-parts requiring considerable labor and time for the assemblage of. these brushes.

Vith these features in mind, I have improved upon the sectional-brush to the end that the renewable sections shall contain all of the wearingparts and may be securely anchored within the brush structure, and readily assembled to complete or rrenew the improved sectional-brush of my invention. This preferably consists of a plurality of segmental brush-sections which are an. chored upon a central hub-member, and secured thereon against displacement, The segmental brush-section of my invention consists of a doubled twisted wire base wherein the strands of fine crimped wire are twisted; the ends of the base wires being brought out to engage suitable anchorage-members. A metal stamping is placed about the base wire, bent into segmental form, and the stamping is closed upon the crimped wires, or bristles to retain them against their natural tension in approximately the desired plane.

These, and other features, will be more readily gathered by making reference to the accompanying sheet of drawings, wherein Figui-eI, is a plan view of my improved rotary sectional-brush, partially assembled and broken away. Fig. II, is a vertical sectional view of the brush. Figs. III and IV, respectively are plan and sectional views of a. separating disk. Fig. V, is a plan view of an alternative separating-ring or washer, and Fig. VI, is a top View showing the hublnember and anchorage-parts partly broken away and in section.

Throughout the several figures of the drawings, I have indicated similar parts by thesame character of reference.

' Brief consideration of Figs. II and VI will readily disclose the hub-structure,comprising a bottom platea wherein some six posts or anchorage members o are vertically secured in pairs. The central threaded sleeve c extends through a circular opening in this base plate a, whilel the upper plate d fits over said sleeve and posts; being suit-- ably bored or pierced with holes disposed at intervals to register with these posts as is the stamped separating disk e of Fig. III. Exterior hexagonal nuts f are adapted to be screwed upon the tapped ends of sleeve c, and secure the assembled structure firmly together so that the brush-sections may present a unitary circular brush. One of these brush-sections is shown above the separating plate e in the upper portion of -Fig. I, ywhile three identical brush-sections are similarly mounted, or assembled upon the base plate disposed beneath the separating disk e. Some nine segmental brushsections are required to complete the rotary brush herein shown, but it will be understood that a greater or less number of sections may be assembled to complete any desired brush.

Each of the segmental brush-sections comprises a doubled twisted wire g wherein the fine crimped wires or bristles It are twisted in doubled loops. The ends of the base wire are formed with suitable anchoragewire loops of the base wires herein shown parts or loops g adapted to slip over the 1 are adapted to embrace any two correspondposts b. A segmental sheet-metal stamping z' shown partially broken away in Fig. I, is then clamped tightly about the bases of the bristles rto take up their natural spring or tension, to securely assemble these otherwise divergent crimped Wires, and serve to strengthen or stay the individual brushsection. In the size of brush shown, each segmental brush-section spans approximately an arc of some 120, but obviously the length or shape of the brush-section may be altered as required.

The separating disk e, which may well be used in place of the plain annular washer y', and with a saving in cost and weight of metal, is stamped out with alternating bosses e', and With suitable central and annularly disposed holes e2 e for accommodating the hub-member c and posts b. In Fig. II, I have shown the alternative useA of the separating disk e, or the washer y', for spacing adjacent sets of brush-sections, arranged in differentrplanes to form my improved brush, but preferably the separating disk e is employed when it is desired that the sets of brush-sections shall be slightly separated. 'It will be perceived that the crimped wires will be more closely matted, and

placed under great tension, should the blush-sections be assembled without the use of separating parts, but their replacement would not be as readily accomplished asin the structure shown. e

Having explained above the preferred structure of my improved rotary brush, I may now call attention to the fact that therein each of the brush-sections is securely and positively anchored upon the posts, and that any wear resulting from the fleXure of the bristles, or wires in use, (which action is very considerable when the brush is worn down) is sustained by the closely engaging sheet metal stamping z' forming part4 of the brush-section. Vere the exterior disk and separating-rings alone relied upon for retaining and compressing the brush-sections, I may point out that this constant fleXurev bling the complete brush, and the several parts may then be secured together Without first strongly compressing the assembled brush-sections; this being provided against by inclosing the bases of the crimped Wires trmlv in the sheet metal stamping. The

ingly positioned posts, but other suitable anchorage means may be employed for the purpose of securing the individual brushsections firmly in place.

The recited improvements, it will be understood, are not all limited to the particular type of brush shown, nor to the specific means set forth for practicing my invention, and I accordingly claim as new, and desire to secure by Letters Patent, the following l. In a segmental rotary brush of the class described, the combination with a hubmember, of a plurality of transverse anchorage-parts provided thereon, a plurality ofsegmental brush sections having co-acting anchorage-parts adapted to be assembled thereon and form a circular brush, metal stampings embracing the bases of said brush sections to reinforce the same and assemble the bristles thereof, spacing-parts therebetween for engaging said stampings, and

means for uniting the members to form the complete rotary brush, substantially as set forth.

2. In a rotary brush, the combination With an outer plate of a plurality of posts rigidly secured to said plate, a plurality of sets of segmental brush-sections removably fitting over said posts,'each set of segmental brushsections forming a complete circular bristlesection, spacing-parts separating the adjacent sets of blush-sections, an outer plate titting over the assembled spacing-parts and brush-sections, and means for uniting the Whole to form a circular-brush, substantially as set forth.

3. In a rotary brush, the combination with an outer plate of a plurality of posts rigidly secured to said plate, a plurality of sets of segmental brush-sections removably fitting over said posts, each set of segmental brushsections forming acomplete circular bristlesection, metal disks inter osed between the adjacent sets of brush-sections, the same having openings fitting over the posts and annular series of bosses for engaging and sepayrating the bases of the brush-sections, 'an

outer plate disposed exteriorly of the assembled parts, and means for securely uniting the members to form a circular brush, substantially as set forth.

In testimony that I claim all of the foregoing as my invention, I have subscribed my name and taken the statutory oath at Cleveland, this second day of November, A. D.`

1906, in the presence of two subscribing witnesses.

'- HENRY NELSON.

llVitnes'ses:4 V. Gr. ARMSTRONG,

ALBERT LYNN LAWRENCE. 

